Prepare for CBSE class 12 Maths board paper with the help of previous years solved question papers. Vedantu provides CBSE last 5-year Maths question paper with video solutions.

Question - Two schools A and B want to award their selected students on the values of sincerity,
truthfulness and helpfulness. T-he school A wants to award x each, y each and z each
for the three respective values to 3, 2 and 1 students respectively with a total award
money of 1,600. School B wants to spend 2,300 to award its 4, 1 and 3 students
on the respective values (by giving the same award money to the three values as
before). If the total amount for one prize on each value is 900, using matrices, find the
award money for each value. Apart from these three values, suggest one more value
which should be considered for award.
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Question - Evaluate : .........
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by
Reema Narula
added on Mon Feb 16 06:21:50 UTC 2015 143 views

Question - A motorboat whose speed in still water is 18 km/h, takes 1 hour more to go 24 km
upstream than to return downstream to the same spot. Find the speed of the
stream.
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Question - Two numbers are selected at random (without replacement) from the first six positive
integers. Let X denote the larger of the two numbers obtained. Find the probability
distribution of the random variable X, and hence find the mean of the distribution.
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Question - If the sum of the lengths of the hypotenuse and a side of a right triangle is given, show
that the area of the triangle is maximum, when the angle between them is 60°.
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Question - There are three coins. One is a two-headed coin (having head on both faces), another
is a biased coin that comes up heads 75% of the times and third is also a biased coin
that comes up tails 40% of the times. One of The three coins is chosen at random and
tossed, and it shows heads. What is the probability that it was the two-headed coin?
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